i18n: How to add new language to this repository

[mb-wali]

Let's pretend we want to add the French: fr language as a supported language to the repository.

1. Modify package.json and add the French langugage in to the list of langugages.

---   "config": {"languages": ["en", "de", "tr"]},
+++   "config": {"languages": ["en", "de", "tr", "fr"]},

2. Pull French language file from Transifex
   tx pull -l fr

3. Run convert command
   npm run i18n-conv-po-all

4. update i18next instance, to add the new language.
   modify i18next.js file to add the new language.

• import the new translation file.
  import TRANSLATIONS_FR from './translations/fr/translations.json';

• update resources and add the new language.

    resources: {
       ....
      fr: {
        translation: TRANSLATIONS_FR,
      },
    },

[zzacharo]

Translation with interpolation https://www.i18next.com/translation-function/interpolation
Example

i18next.t(`My dynamic {{myvar}} title`, 
    {myvar: 'awesome'}
)

will result in

My dynamic {{myvar}} title

in the .po file